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Columbia Dual Winch System Provides Ore Smelting Solution

Columbia Dual Winch System Provides Ore Smelting Solution

Application: Dual winch system moving an ore spreader in a hazardous location
Customer: Nu-Iron Unlimited
Location: Trinidad & Tobago
Winch Model: Two (2) Columbia WD2500-4A17-L-01
Line Pull: 2,500 pounds on the first layer
Line Speed: 5 feet per minute on the first layer
Power Source: 460 VAC / Three Phase / 60 Hz

Special Features:

  • Motor (1750 rpm) and controls rated Class I Division 2 Group B/C/D for hazardous location use
  • Two (2) reversing starters in properly rated enclosure
    • Installed on panel face:
      • Circuit breaker disconnect
      • A/AUTO/B selector switch
      • FWD/REV momentary contacts
  • Gear-end manual override
  • 40′ of 5/16′ diameter stainless steel wire rope with latching hook
  • Two (2) whisker style external limit switches (rated hazardous location)

Why APPI:  Moving a rolling load 20 feet with a hand winch may not seem to be an onerous task.  However, if your job was cranking one back and forth during a 12 hour shift you too would celebrate when two of our WD2500 AC electric winches arrived and replaced the painfully slow and laborious manual units.

Configured to work in a hazardous environment, the compact planetary reduction winches move a riffler which spreads iron oxide pellets evenly into the smelting furnace below it.  In this operation, one winch pulls while the line is pulled off the other winch under tension.  This arrangement keeps the lines tight and eliminates the delays and costs associated with wire rope that does not spool properly.

Richard Murry, the mechanical engineer for the plant, confirmed the system is performing as designed.  He also indicated the operators never fail to express their gratitude for the new system.

Please contact us if you would like more information about this particular dual winch system or any of our other products and services.


Allied Power Products, Inc. has specialized in providing winches, hoists, capstans and cranes to meet our customers’ specific application requirements for more than 30 years.

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